mirror of
https://github.com/actix/actix-website
synced 2024-11-30 19:14:36 +01:00
e318f20a0c
Unlike other code I've seen in the guide, this code didn't compile. It's especially bad that it can be the first experience someone has with actix-web, and then doesn't work. I'm going to run through the docs as a first-time user so I'll try to make sure everything works the way it's supposed to.
68 lines
1.8 KiB
Markdown
68 lines
1.8 KiB
Markdown
---
|
||
title: Getting Started
|
||
menu: docs_basics
|
||
weight: 130
|
||
---
|
||
|
||
# Getting Started
|
||
|
||
Let’s write our first actix web application!
|
||
|
||
## Hello, world!
|
||
|
||
Start by creating a new binary-based Cargo project and changing into the new directory:
|
||
|
||
```bash
|
||
cargo new hello-world --bin
|
||
cd hello-world
|
||
```
|
||
|
||
Now, add `actix-web` as dependencies of your project by ensuring your `Cargo.toml`
|
||
contains the following:
|
||
|
||
```ini
|
||
[dependencies]
|
||
actix-web = "{{< actix-version "actix-web" >}}"
|
||
```
|
||
|
||
In order to implement a web server, we first need to create a request handler.
|
||
|
||
A request handler is a function that accepts an `HttpRequest` instance as its only parameter
|
||
and returns a type that can be converted into `HttpResponse`:
|
||
|
||
Filename: `src/main.rs`
|
||
|
||
```rust
|
||
extern crate actix_web;
|
||
use actix_web::{HttpRequest, App, server};
|
||
|
||
fn index(_req: HttpRequest) -> &'static str {
|
||
"Hello world!"
|
||
}
|
||
```
|
||
|
||
Next, create an `Application` instance and register the request handler with
|
||
the application's `resource` on a particular *HTTP method* and *path* and
|
||
after that, the application instance can be used with `HttpServer` to listen
|
||
for incoming connections. The server accepts a function that should return an
|
||
`HttpHandler` instance. For simplicity `server::new` could be used, this
|
||
function is shortcut for `HttpServer::new`:
|
||
|
||
```rust
|
||
fn main() {
|
||
server::new(|| {
|
||
App::new()
|
||
.resource("/", |r| r.f(index))
|
||
})
|
||
.bind("127.0.0.1:8088").unwrap()
|
||
.run();
|
||
}
|
||
```
|
||
|
||
That's it! Now, compile and run the program with `cargo run`.
|
||
Head over to ``http://localhost:8088/`` to see the results.
|
||
|
||
If you want you can have an automatic reloading server during development
|
||
that recompiles on demand. To see how this can be accomplished have a look
|
||
at the [autoreload pattern](../autoreload/).
|